[PATCH] Allow opening file on multiple units

[Steve Kargl]

On Wed, May 15, 2019 at 04:24:47PM +0300, Janne Blomqvist wrote:
> As of Fortran 2018 it's allowed to open the same file on multiple
> units.
> 
> fortran/ChangeLog:
> 
> 2019-05-15  Janne Blomqvist  <jb@gcc.gnu.org>
> 
> 	PR fortran/90461
>         * io/open.c (new_unit): Don't check if the file is already open
> 	for F2018.
> 
> testsuite/ChangeLog:
> 
> 2019-05-15  Janne Blomqvist  <jb@gcc.gnu.org>
> 
> 	PR fortran/90461
>         * gfortran.dg/open_errors_2.f90: Add -std=f2008, adjust line number.
> 	* gfortran.dg/open_errors_3.f90: New test.
> 
> Regtested on x86_64-pc-linux-gnu, Ok for trunk?

Yes.  

-- 
Steve